#ifndef FILE_OCCGEOM
#define FILE_OCCGEOM

/* *************************************************************************/
/* File:   occgeom.hpp                                                     */
/* Author: Robert Gaisbauer                                                */
/* Date:   26. May  03                                                     */
/* *************************************************************************/

#ifdef OCCGEOMETRY

#include <meshing.hpp>

#include "BRep_Tool.hxx"
#include "Geom_Curve.hxx"
#include "Geom2d_Curve.hxx"
#include "Geom_Surface.hxx"
#include "GeomAPI_ProjectPointOnSurf.hxx"
#include "GeomAPI_ProjectPointOnCurve.hxx"
#include "BRepTools.hxx"
#include "TopExp.hxx"
#include "BRepBuilderAPI_MakeVertex.hxx"
#include "BRepBuilderAPI_MakeShell.hxx"
#include "BRepBuilderAPI_MakeSolid.hxx"
#include "BRepOffsetAPI_Sewing.hxx"
#include "BRepLProp_SLProps.hxx"
#include "BRepAdaptor_Surface.hxx"
#include "Poly_Triangulation.hxx"
#include "Poly_Array1OfTriangle.hxx"
#include "TColgp_Array1OfPnt2d.hxx"
#include "Poly_Triangle.hxx"
#include "GProp_GProps.hxx"
#include "BRepGProp.hxx"
#include "Geom_Surface.hxx"
#include "TopExp.hxx"
#include "gp_Pnt.hxx"
#include "TopoDS.hxx"
#include "TopoDS_Solid.hxx"
#include "TopExp_Explorer.hxx"
#include "TopTools_ListIteratorOfListOfShape.hxx"
#include "BRep_Tool.hxx"
#include "Geom_Curve.hxx"
#include "Geom2d_Curve.hxx"
#include "Geom_Surface.hxx"
#include "GeomAPI_ProjectPointOnSurf.hxx"
#include "GeomAPI_ProjectPointOnCurve.hxx"
#include "TopoDS_Wire.hxx"
#include "BRepTools_WireExplorer.hxx"
#include "BRepTools.hxx"
#include "TopTools_IndexedMapOfShape.hxx"
#include "TopExp.hxx"
#include "BRepBuilderAPI_MakeVertex.hxx"
#include "BRepBuilderAPI_MakeShell.hxx"
#include "BRepBuilderAPI_MakeSolid.hxx"
#include "BRepOffsetAPI_Sewing.hxx"
#include "BRepLProp_CLProps.hxx"
#include "BRepLProp_SLProps.hxx"
#include "BRepAdaptor_Surface.hxx"
#include "BRepAdaptor_Curve.hxx"
#include "Poly_Triangulation.hxx"
#include "Poly_Array1OfTriangle.hxx"
#include "TColgp_Array1OfPnt2d.hxx"
#include "Poly_Triangle.hxx"
#include "GProp_GProps.hxx"
#include "BRepGProp.hxx"
#include "TopoDS_Shape.hxx"
#include "TopoDS_Face.hxx"
#include "IGESToBRep_Reader.hxx"
#include "Interface_Static.hxx"
#include "GeomAPI_ExtremaCurveCurve.hxx"
#include "Standard_ErrorHandler.hxx"
#include "Standard_Failure.hxx"
#include "ShapeUpgrade_ShellSewing.hxx"
#include "ShapeFix_Shape.hxx"
#include "ShapeFix_Wireframe.hxx"
#include "BRepMesh.hxx"
#include "BRepMesh_IncrementalMesh.hxx"
#include "BRepBndLib.hxx"
#include "Bnd_Box.hxx"
#include "ShapeAnalysis.hxx"
#include "ShapeBuild_ReShape.hxx"


// Philippose - 29/01/2009
// OpenCascade XDE Support
// Include support for OpenCascade XDE Features
#include "TDocStd_Document.hxx"
#include "Quantity_Color.hxx"
#include "XCAFApp_Application.hxx"
#include "XCAFDoc_ShapeTool.hxx"
#include "XCAFDoc_Color.hxx"
#include "XCAFDoc_ColorTool.hxx"
#include "XCAFDoc_ColorType.hxx"
#include "XCAFDoc_LayerTool.hxx"
#include "XCAFDoc_DimTolTool.hxx"
#include "XCAFDoc_MaterialTool.hxx"
#include "XCAFDoc_DocumentTool.hxx"
#include "TDF_Label.hxx"
#include "TDF_LabelSequence.hxx"
#include "STEPCAFControl_Reader.hxx"
#include "STEPCAFControl_Writer.hxx"
#include "IGESCAFControl_Reader.hxx"
#include "IGESCAFControl_Writer.hxx"

#include "IGESControl_Reader.hxx"
#include "STEPControl_Reader.hxx"
#include "IGESControl_Writer.hxx"
#include "STEPControl_Writer.hxx"

#include "StlAPI_Writer.hxx"
#include "STEPControl_StepModelType.hxx"

namespace netgen
{
#include "occmeshsurf.hpp"

  extern DLL_HEADER MeshingParameters mparam;

#define PROJECTION_TOLERANCE 1e-10

#define ENTITYISVISIBLE 1
#define ENTITYISHIGHLIGHTED 2
#define ENTITYISDRAWABLE 4

#define OCCGEOMETRYVISUALIZATIONNOCHANGE   0
#define OCCGEOMETRYVISUALIZATIONFULLCHANGE 1  // Compute transformation matrices and redraw
#define OCCGEOMETRYVISUALIZATIONHALFCHANGE 2  // Redraw



   class EntityVisualizationCode
   {
      int code;

   public:

      EntityVisualizationCode()
      {  code = ENTITYISVISIBLE + !ENTITYISHIGHLIGHTED + ENTITYISDRAWABLE;}

      int IsVisible ()
      {  return code & ENTITYISVISIBLE;}

      int IsHighlighted ()
      {  return code & ENTITYISHIGHLIGHTED;}

      int IsDrawable ()
      {  return code & ENTITYISDRAWABLE;}

      void Show ()
      {  code |= ENTITYISVISIBLE;}

      void Hide ()
      {  code &= ~ENTITYISVISIBLE;}

      void Highlight ()
      {  code |= ENTITYISHIGHLIGHTED;}

      void Lowlight ()
      {  code &= ~ENTITYISHIGHLIGHTED;}

      void SetDrawable ()
      {  code |= ENTITYISDRAWABLE;}

      void SetNotDrawable ()
      {  code &= ~ENTITYISDRAWABLE;}
   };



   class Line
   {
   public:
      Point<3> p0, p1;

      double Dist (Line l);

      double Length ();
   };



   inline double Det3 (double a00, double a01, double a02,
      double a10, double a11, double a12,
      double a20, double a21, double a22)
   {
      return a00*a11*a22 + a01*a12*a20 + a10*a21*a02 - a20*a11*a02 - a10*a01*a22 - a21*a12*a00;
   }




   class OCCGeometry : public NetgenGeometry
   {
      Point<3> center;

   public:
      TopoDS_Shape shape;
      TopTools_IndexedMapOfShape fmap, emap, vmap, somap, shmap, wmap;
      Array<bool> fsingular, esingular, vsingular;
      Box<3> boundingbox;
      Array<string> fnames, enames, snames;
      // Philippose - 29/01/2009
      // OpenCascade XDE Support
      // XCAF Handle to make the face colours available to the rest of
      // the system
      Handle_XCAFDoc_ColorTool face_colours;

     mutable int changed;
      Array<int> facemeshstatus;

      // Philippose - 15/01/2009
      // Maximum mesh size for a given face
      // (Used to explicitly define mesh size limits on individual faces)
      Array<double> face_maxh;
      
      // Philippose - 14/01/2010
      // Boolean array to detect whether a face has been explicitly modified 
      // by the user or not
      Array<bool> face_maxh_modified;

      // Philippose - 15/01/2009
      // Indicates which faces have been selected by the user in geometry mode
      // (Currently handles only selection of one face at a time, but an array would
      //  help to extend this to multiple faces)
      Array<bool> face_sel_status;

      Array<EntityVisualizationCode> fvispar, evispar, vvispar;

      double tolerance;
      bool fixsmalledges;
      bool fixspotstripfaces;
      bool sewfaces;
      bool makesolids;
      bool splitpartitions;

      OCCGeometry()
      {
         somap.Clear();
         shmap.Clear();
         fmap.Clear();
         wmap.Clear();
         emap.Clear();
         vmap.Clear();
      }


      DLL_HEADER virtual void Save (string filename) const;


      DLL_HEADER void BuildFMap();

      Box<3> GetBoundingBox()
      {  return boundingbox;}

      int NrSolids()
      {  return somap.Extent();}

      // Philippose - 17/01/2009
      // Total number of faces in the geometry
      int NrFaces()
      {  return fmap.Extent();}

      void SetCenter()
      {  center = boundingbox.Center();}

      Point<3> Center()
      {  return center;}

      void Project (int surfi, Point<3> & p) const;
      bool FastProject (int surfi, Point<3> & ap, double& u, double& v) const;

      OCCSurface GetSurface (int surfi)
      {
         cout << "OCCGeometry::GetSurface using PLANESPACE" << endl;
         return OCCSurface (TopoDS::Face(fmap(surfi)), PLANESPACE);
      }

      DLL_HEADER void CalcBoundingBox ();
      DLL_HEADER void BuildVisualizationMesh (double deflection);

      void RecursiveTopologyTree (const TopoDS_Shape & sh,
         stringstream & str,
         TopAbs_ShapeEnum l,
         bool free,
         const char * lname);

      DLL_HEADER void GetTopologyTree (stringstream & str);

      DLL_HEADER void PrintNrShapes ();

      DLL_HEADER void CheckIrregularEntities (stringstream & str);

      DLL_HEADER void SewFaces();

      DLL_HEADER void MakeSolid();

      DLL_HEADER void HealGeometry();

      // Philippose - 15/01/2009
      // Sets the maximum mesh size for a given face
      // (Note: Local mesh size limited by the global max mesh size)
      void SetFaceMaxH(int facenr, double faceh)
      {
         if((facenr> 0) && (facenr <= fmap.Extent()))
         {
	   face_maxh[facenr-1] = min(mparam.maxh,faceh);
            
            // Philippose - 14/01/2010
            // If the face maxh is greater than or equal to the 
            // current global maximum, then identify the face as 
            // not explicitly controlled by the user any more
            if(faceh >= mparam.maxh)
            {
               face_maxh_modified[facenr-1] = 0;
            }
            else
            {
               face_maxh_modified[facenr-1] = 1;
            }
         }
      }

      // Philippose - 15/01/2009
      // Returns the local mesh size of a given face
      double GetFaceMaxH(int facenr)
      {
         if((facenr> 0) && (facenr <= fmap.Extent()))
         {
            return face_maxh[facenr-1];
         }
         else
         {
            return 0.0;
         }
      }
      
      // Philippose - 14/01/2010
      // Returns the flag whether the given face 
      // has a mesh size controlled by the user or not
      bool GetFaceMaxhModified(int facenr)
      {
         return face_maxh_modified[facenr-1];
      }
      
      // Philippose - 17/01/2009
      // Returns the index of the currently selected face
      int SelectedFace()
      {
         int i;

         for(i = 1; i <= fmap.Extent(); i++)
         {
            if(face_sel_status[i-1])
            {
               return i;
            }
         }

         return 0;
      }

      // Philippose - 17/01/2009
      // Sets the currently selected face
      void SetSelectedFace(int facenr)
      {
         face_sel_status = 0;

         if((facenr >= 1) && (facenr <= fmap.Extent()))
         {
            face_sel_status[facenr-1] = 1;
         }
      }

      void LowLightAll()
      {
         for (int i = 1; i <= fmap.Extent(); i++)
            fvispar[i-1].Lowlight();
         for (int i = 1; i <= emap.Extent(); i++)
            evispar[i-1].Lowlight();
         for (int i = 1; i <= vmap.Extent(); i++)
            vvispar[i-1].Lowlight();
      }

      DLL_HEADER void GetUnmeshedFaceInfo (stringstream & str);
      DLL_HEADER void GetNotDrawableFaces (stringstream & str);
      DLL_HEADER bool ErrorInSurfaceMeshing ();

//      void WriteOCC_STL(char * filename);

     DLL_HEADER virtual int GenerateMesh (shared_ptr<Mesh> & mesh, MeshingParameters & mparam);

      DLL_HEADER virtual const Refinement & GetRefinement () const;
   };



   class DLL_HEADER OCCParameters
   {
   public:

      /// Factor for meshing close edges 
      double resthcloseedgefac;


      /// Enable / Disable detection of close edges
      int resthcloseedgeenable;


	  /// Minimum edge length to be used for dividing edges to mesh points
	  double resthminedgelen;


	  /// Enable / Disable use of the minimum edge length (by default use 1e-4)
	  int resthminedgelenenable;

      /*!
         Default Constructor for the OpenCascade
         Mesh generation parameter set
      */
      OCCParameters();


      /*!
         Dump all the OpenCascade specific meshing parameters 
         to console
      */
      void Print (ostream & ost) const;
   };
   

   void PrintContents (OCCGeometry * geom);

   DLL_HEADER OCCGeometry * LoadOCC_IGES (const char * filename);
   DLL_HEADER OCCGeometry * LoadOCC_STEP (const char * filename);
   DLL_HEADER OCCGeometry * LoadOCC_BREP (const char * filename);

   DLL_HEADER extern OCCParameters occparam;


   // Philippose - 31.09.2009
   // External access to the mesh generation functions within the OCC
   // subsystem (Not sure if this is the best way to implement this....!!)
   DLL_HEADER extern int OCCGenerateMesh (OCCGeometry & occgeometry, shared_ptr<Mesh> & mesh,
			       MeshingParameters & mparam);

   DLL_HEADER extern void OCCSetLocalMeshSize(OCCGeometry & geom, Mesh & mesh);

   DLL_HEADER extern void OCCMeshSurface (OCCGeometry & geom, Mesh & mesh, int perfstepsend);

   DLL_HEADER extern void OCCFindEdges (OCCGeometry & geom, Mesh & mesh);
}

#endif

#endif
